WO2019214958A2 - Dispositif pour l'entraînement rotatif d'un outil et broche pour ce faire - Google Patents

Dispositif pour l'entraînement rotatif d'un outil et broche pour ce faire Download PDF

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Publication number
WO2019214958A2
WO2019214958A2 PCT/EP2019/060609 EP2019060609W WO2019214958A2 WO 2019214958 A2 WO2019214958 A2 WO 2019214958A2 EP 2019060609 W EP2019060609 W EP 2019060609W WO 2019214958 A2 WO2019214958 A2 WO 2019214958A2
Authority
WO
WIPO (PCT)
Prior art keywords
spindle
coil
tool
inner coil
spindle part
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2019/060609
Other languages
German (de)
English (en)
Other versions
WO2019214958A3 (fr
Inventor
Clemens DICKE
Benjamin BULLA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Son-X GmbH
Original Assignee
Son-X GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Son-X GmbH filed Critical Son-X GmbH
Publication of WO2019214958A2 publication Critical patent/WO2019214958A2/fr
Publication of WO2019214958A3 publication Critical patent/WO2019214958A3/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/043—Accessories for spindle drives
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B37/00—Boring by making use of vibrations of ultrasonic frequency
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work

Definitions

  • the invention relates to a device for rotational drive of a tool and a spindle for it.
  • An inductive energy transfer can be realized between a coil and a (vibrating) tool holder.
  • a tool holder eg a tool magazine of a highly automated production plant
  • each tool holder eg a tool magazine of a highly automated production plant
  • the additional coil parts complicate the manufacture of tool holders with a very good concentricity.
  • an application of such systems in the high-speed range requires special materials, since there are mechanical limits to the use of ferrite cores.
  • a device for rotatori rule drive a tool, and a spindle will be presented for it, in which electrical energy from a fixed to a rotating part of the device can be transmitted particularly efficiently before and is also suitable for very high speeds.
  • a spindle contributes to a device for rotatably driving a tool, which comprises at least the following:
  • a static spindle part which is rotatably connected to a drive unit of the front direction
  • a rotatable spindle member which is mounted relative to the static spindle part rotatably bar on the static spindle part and which has an interface for a tool holder for the tool over which the tool holder rotatably connected to the rotatable spindle part,
  • the described spindle or the device can in particular be designed and set up for machining, for example in the manner of milling.
  • a corresponding tool can be attached to the device.
  • the tool may be, for example, a milling head.
  • Age native or in addition, it is also possible that the device described is intended for drilling and set up. In that case the tool is a drill.
  • the tool can be detachably connected to the spindle so that the tool can be replaced by a user.
  • the device described can be determined and set up in particular both for milling and for drilling.
  • the tool can be driven in rotation with the device. This means, in particular, that the tool is rotated by the device about an axis of the tool, which coincides with the axis of rotation of the device.
  • the tool can be connected via the tool holder with the device described and in particular with the rotatable spindle part.
  • the tool holder like the tool and the drive unit, is not part of the spindle. Rather, the rotating spindle part on the interface, via which the work tool holder can be connected to the rotatable spindle part.
  • the interface can be, for example, a standardized interface of the HSK, SK or BT standard. Other deviating from the norm solutions are also conceivable.
  • the tool holder can preferably be connected to the rotatable spindle part via the interface in such a way that a user can exchange the tool holder. For example, the user can connect various tool holders to the rotatable spindle part for different types of tool.
  • the spindle is preferably designed such that the spindle can be connected to the drive unit with a first end face of the spindle.
  • the interface is preferably provided on one of the first end face opposite the second end face of the spindle.
  • the tool with the rotatable Spindelteilver be prevented.
  • the tool can be releasably connected to the tool holder such that the tool can be replaced by a user.
  • the tool rotatably ver with the tool holder is connected.
  • the tool is formed integrally with the tool holder. In that case, the user can replace the tool only by replacing the tool holder.
  • the tool holder is rotatably in operation verbun with the rotatable spindle part.
  • This rotation is relative to the fixed drive unit about the axis of rotation of the device.
  • the rotatable spindle part is rotatably mounted relative to the static spindle part. Before preferably corresponding bearings are provided between the static spindle part and the rotatable spindle part.
  • the transmission of electrical energy takes place in a middle section from the spindle or in a portion of the spindle in the vicinity of the second end face (ie, the bottom or the tool holder facing).
  • the inner coil (which may possibly also be referred to as secondary coil) may be provided immediately adjacent to a bearing of the spindle. This can be used to reduce dynamic interference effects.
  • the drive unit with which the spindle described is connectable preferably before a motor, which is in particular an electric motor can act.
  • a motor which is in particular an electric motor can act.
  • the rotatable spindle part relative to the drive unit to a spindle axis of the spindle, which preferably coincides with the axis of rotation of the device are rotated.
  • the spindle axis is thus the axis about which the rotating spindle part (and thus also the tool holder and the tool) are rotated during operation.
  • the drive unit has an AC voltage source, via which an AC voltage can be coupled into the outer coil.
  • the alternating voltage generates a magnetic alternating field from the outer coil.
  • the inner coil is arranged within the magnetic alternating field generated in such a way that an AC voltage is induced in the inner coil.
  • the outer coil is preferably non-rotatably connected to the static spindle part. If the spindle is connected to the device, the outer coil is also rotationally fixed relative to the drive unit.
  • the inner coil is preferably non-rotatably connected to the rotatable spindle part. This means that, during operation, the inner coil rotates together with the rotatable spindle part relative to the outer coil or to the static spindle part and the drive unit.
  • a particularly efficient transmission of electrical energy can be achieved in the device before lying in that the outer coil and the In nenspule are arranged inside each other. Such an arrangement means that the outer coil at least partially surrounds the outer coil.
  • the inner coil and the outer coil are preferably both in a common plane which is normal or perpendicular to an axis of the spindle and the Antriebssein unit aligned. Such an orientation of the inner coil and the outer coil to each other can also be referred to as "engagement" of the inner coil in the outer coil or a "nested arrangement”.
  • milling machines can be equipped with several different tool holders.
  • As part of the automation milling machines are equipped with ver different tools that can be placed in a magazine within the Fräsma machine. This allows the fully automated machining of workpieces in which, for manufacturing reasons, different milling tools must be used. Since more than one tool holder should therefore be used, it would be disadvantageous to have to provide each tool holder with coils.
  • With the spindle described can be dispensed tool holders on spools on the work. This can not only reduce the cost of a tool holder, but also facilitate the development of the tool holder. This is in particular because coils on the tool holder can affect its Rundlaufei properties. When using the spindle described it is sufficient if the tool holder has, for example, plug contacts.
  • the outer coil has an outer coil diameter and the inner coil has an inner coil diameter which is smaller than the outer coil diameter.
  • a particularly small inner coil diameter is particularly advantageous for particularly high rotational speeds of the rotatable spindle part.
  • the turns Internal coil with the speed of the rotatable spindle part. It can attack particularly large centrifugal forces on the inner coil.
  • the larger the inner coil diameter the larger these centrifugal forces.
  • a maximum usable speed of the device can therefore be determined in particular by material properties of the inner coil. The smaller the inner coil diameter, the larger the maximum usable speed of the device can be.
  • the inner coil (or secondary coil) and / or the outer coil (or primary coil) are preferably ferromagnetic iron alloys used.
  • ferromagnetic iron alloys there are preferred electrotechnically particularly effective alloys for the stator (in this case the outer coil) and electrotechnically less we kungsvoll, but mechanically better alloys for the rotor (here the inner coil) is used.
  • such materials are known under the following trademarks: MUMETALL® / VACOPERM ® 100 (80% NiFe), CRYOPERM® 10 (80% NiFe), VACOFLUX® / VACODUR® (50% CoFe), TRAFOPERM® (3% SiFe), VITROVAC® 6025 X (80% Co).
  • the outer coil and / or the inner coil are preferably performed as a cylindrical coils.
  • the inner coil diameter or the Au .spulen pressmesser the cylinder diameter of the respective coil. If the coils are designed differently, the respective coil diameter is defined analogously.
  • the outer coil has an outer coil axis and the inner coil has an inner coil axis, wherein the outer coil axis and / or the inner coil axis coincide with a spindle axis of the spindle.
  • both the outer coil axis and the inner coil axis coincide with the spindle axis. In that case, the outer coil axis and the inner coil axis also coincide with each other.
  • the outer coil and / or the inner coil are preferably formed cylindrical.
  • the outer coil axis or the inner coil axis is the cylinder axis of the respective coil. If the coils are designed differently, the respective coil axis is defined analogously.
  • the outer coil preferably has an outer coil winding and the inner coil preferably has an inner coil winding.
  • the respective coil winding is preferably formed in particular around the corresponding coil axis circumferentially. In the case of a cylindrical coil, this means that the coil winding is provided along the circumference of the cylinder jacket of the cylindrical coil.
  • the inner coil and the outer coil both preferably extend over a certain height.
  • each of the outer coil and the inner coil has a height of 1 to 5 cm [centimeters].
  • center planes (middle planes) of the inner coil and the outer coil are superposed on each other in the above-described common plane.
  • the center planes of the inner coil and the outer coil are not exactly on each other, but are displaced relative to each other according to a distance of, for example, 0 cm to 5 cm along the axis. In this variant, however, it is preferred that the heights of the coils overlap one another. Thus, a good power transmission of the outer coil can be achieved on the inner coil.
  • the outer coil overlaps the inner coil in both directions along the axis (upwards and downwards). This further improves the power transfer from the outer coil to the inner coil. If the inner coil axis coincides with the spindle axis, the inner coil is rotated around its own axis during operation. This is particularly advantageous because otherwise significant vibrations could occur. If the outer coil axis also coincides with the spindle axis and the inner coil, a gap between the inner coil and the outer coil can be designed to be particularly narrow. As a result, electrical energy from the outer coil can be transmitted to the inner coil in a particularly low-loss manner and therefore particularly efficiently. This is further promoted by the fact that the magnetic field generated by the outer coil in the case has a particularly high flux density in the region of the inner coil.
  • the outer coil on an outer coil winding and the inner coil on an inner coil winding wherein the outer coil winding and / or the inner coil winding are extended in a longitudinal direction of the device.
  • both the outer coil winding and the inner coil winding are extended in the longitudinal direction of the device.
  • the longitudinal direction of the device is defined along the axis of rotation.
  • the In nenspulenachse and the outer coil axis are preferably arranged parallel to the longitudinal direction.
  • the respective coil winding is preferably designed as a wire which is wound around the respective coil axis circumferentially. That the convincedspulenwick ment, or the outer coil winding are performed extended in the longitudinal direction, in particular means that the respective wire is not wound up in a plane perpendicular to the longitudinal direction.
  • the respective coil winding in Extended longitudinally. Coil heights of the inner coil and the outer coil each extend along the longitudinal direction.
  • the outer coil is arranged concentrically around the inner coil.
  • the outer coil diameter is larger than the In nenspulen pressmesser.
  • the inner coil and the outer coil are of cylindrical design
  • the inner coil and the outer coil can in particular be arranged nested in one another such that a gap with the shape of a thin hollow cylinder results between the two coils.
  • the magnetic field generated by the outer coil in the region of the inner coil can have a particularly high flux density, so that the electrical energy can be transmitted particularly well from the outer coil to the inner coil.
  • the interface for the tool holder is designed and connected to the inner coil or secondary coil such that at least electrical energy can be transmitted from the inner coil or secondary coil to the tool holder via the interface.
  • the tool holder can in particular have electrically driven components.
  • a tool holder with a vibration generator is connected to the interface in this way, that the vibration generator via the interface with electrical energy ver is ver.
  • the vibration generator may in particular be an electrically drivable component in the sense of the previously described embodiment.
  • the vibra tion generator is preferably a piezoelectric element.
  • the piezoelectric element is preferably arranged in such a way in the tool holder and so oriented that by the piezoelectric element at least the tool can be vibrated ent long the longitudinal direction of the device.
  • the vibration excitation can also be done in other directions. This can be achieved for example when milling with a milling head as a tool, a particularly high material removal of a workpiece to be machined and a correspondingly high processing speed.
  • the vibration generator can in particular be driven by the drive unit or the electrical energy transmitted by the static spindle part to the rotatable spindle part.
  • the vibration generator is preferably connected via the interface with the inner coil.
  • An induced in the inner coil as described above AC voltage can be applied directly to the vibration generator. But it is also possible that the induced voltage in the inner coil is transformed before it is applied to the vibration generator.
  • a use of the described device for ultrasonic machining of workpieces is presented, wherein the tool rotates with egg ner peripheral speed of at least 20 m / s [meters per second], in particular special of at least 55 m / s.
  • a use of the described device for the ultrasonic machining of workpieces is presented, wherein during machining with a cutting speed of at least 20 m / min [meters per minute] is set, in particular a cutting speed in the range up to 350 m / min.
  • the use in particular serves the (final or ultra-precise) machining of a (in particular curved or curved) surface of a workpiece.
  • a cutting tool is used.
  • the device is used in particular with a tool holder according to HSK, SK, or BT standard, in particular according to HSK 63 (DIN 69893), wherein in particular circumferential speeds above 55 m / s are set and an ultrasonic excitation is activated.
  • the particular advantages and design features described further above for the device are applicable to the described use and portable, and vice versa.
  • the described embodiment of the device the described high peripheral speeds are possible.
  • a control for the device described is provided, which is set up for the demand-driven control of the vibration generator.
  • the particular advantages and design features described above for the device and for use are applicable to the control described and transferable, and vice versa.
  • FIG. 1 shows an illustration of a device for the rotational drive of a
  • FIG. 1 shows a device 1 for rotatably driving a tool 6.
  • the tool 6 can be rotated about an axis of rotation 22 with the device 1 as indicated by a round arrow.
  • the device 1 has a drive unit 26, to which a spindle 27 is connected.
  • the spindle 27 has a rotatable spindle part 3, which is rotatable relative to the drive unit 26 about a spindle axis 11 which coincides with the axis of rotation 22.
  • the spindle 27 has a static spindle part 2 which is non-rotatably connected to the drive unit 26.
  • the spindle 27 has a first end face 18 and a first end face 18 opposite the second end face 19. Between the first end face 18 and the second end face 19 Fagerept 25 are provided, via which the rotatable spindle part 3 relative to the static Spindle 2 is rotatably mounted. At the first end face 18, the spindle 27 is held on the drive unit 26.
  • the rotatable spindle part 3 on the second end face 19 has an interface 5 for a tool holder 4 for the tool 6.
  • the tool holder 4 and the tool 6 are not components of the device 1.
  • the work tool holder 4 can be interchangeably connected to the rotatable spindle part 3 who the and the tool 6 can be interchangeably connected to the tool holder 4.
  • the tool holder 4 is connected to the rotatable spindle part 3 and that the tool 6 is connected to the tool holder 4.
  • the tool holder 4 is rotatably connected to the rotatable spindle part 3 and the tool 6 rotatably connected to the tool holder 4.
  • the static spindle part 2 has an outer coil 7 and the rotatable spindle part 3 an inner coil 8.
  • the outer coil 7 and the inner coil 8 are arranged for berüh a contactless transmission of electrical energy from the drive unit 26 via the static spindle part 2, the outer coil 7 and the inner coil 8 on the rotatable spindle part 3 concentrically around each other and intermeshing.
  • the electrical energy can be provided in particular as an alternating voltage from an AC voltage source 12 and passed into the outer coil 7 and are inductively transmitted from this to the inner coil 8.
  • the outer coil 7 has a Au hrspulenachse 9 and the inner coil 8 an inner coil axis 10.
  • the Au ticaspulenachse 9 and the inner coil axis 10 coincide with the spindle axis 1 1 of the spindle 27 and with the axis of rotation 22 together.
  • the inner coil 8 and the Au ospule 7 have along the coil axes 9, 10 each have a coil height 23 and a normal or perpendicular to the coil axes 9, 10 aligned coil means level 24.
  • the coil heights 23 overlap here exactly.
  • the coil middle planes 24 lie exactly on top of each other. This is a preferred embodiment variant. It Embodiments are also possible in which the coil center planes 24 ver are arranged to each other and the coil heights 23 overlap only partially.
  • the interface 5 for the tool holder 4 is designed and connected to the in nenspule 8 that on the interface 5 at least electrical energy from the inner coil 8 can be transmitted to the tool holder 4 contacting.
  • the energy transferring contact means that leads are in direct contact with each other, allowing current to flow along a continuous conduction path. Unlike a contacting
  • the tool holder 4 has a vibration generator 20 and is connected to the interface 5 such that the vibration generator 20 can be supplied with electrical energy via the interface 5.
  • a controller 21 is connected to the AC voltage source 12.
  • the control 21 is in particular adapted to the demand-driven activation of the vibrator generator 20.
  • the outer coil 7 has an outer coil diameter 16 and the inner coil 8 has an inner coil diameter 17.
  • the inner coil diameter 17 is smaller than the outer coil diameter 16.
  • the outer coil 7 has an outer coil winding 13 and the inner coil 8 an inner coil winding 14.
  • the outer coil winding 13 and the mecanical lenwicklung 14 are extended in a longitudinal direction 15 of the device 1. LIST OF REFERENCE NUMBERS

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Jigs For Machine Tools (AREA)
  • Turning (AREA)
  • Connection Of Motors, Electrical Generators, Mechanical Devices, And The Like (AREA)

Abstract

Broche (27) pour un dispositif (1) pour l'entraînement rotatif d'un outil (6), comprenant au moins : - une partie de broche statique (2), qui peut être raccordée solidairement en rotation à une unité d'entraînement (26) du dispositif (1), et - une partie de broche rotative (3), qui est montée sur la partie de broche statique (2) de manière à pouvoir tourner par rapport à la partie de broche statique (2) et qui comprend une interface (5) pour un porte-outil (4) pour l'outil (6), à travers laquelle le porte-outil (4) peut être raccordé solidairement en rotation à la partie de broche rotative (3), la partie de broche statique (2) comprenant une bobine extérieure (7) et la partie de broche rotative (3) comprenant une bobine intérieure (8), et la bobine extérieure (7) et la bobine intérieure (8) étant disposées l'une dans l'autre pour une transmission sans contact d'énergie électrique de la partie de broche statique (2) à travers la bobine extérieure (7) et la bobine intérieure (8) à la partie de broche rotative (3).
PCT/EP2019/060609 2018-05-08 2019-04-25 Dispositif pour l'entraînement rotatif d'un outil et broche pour ce faire Ceased WO2019214958A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102018111039.1A DE102018111039A1 (de) 2018-05-08 2018-05-08 Vorrichtung zum rotatorischen Antrieb eines Werkzeugs und Spindel dafür
DE102018111039.1 2018-05-08

Publications (2)

Publication Number Publication Date
WO2019214958A2 true WO2019214958A2 (fr) 2019-11-14
WO2019214958A3 WO2019214958A3 (fr) 2020-01-09

Family

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Application Number Title Priority Date Filing Date
PCT/EP2019/060609 Ceased WO2019214958A2 (fr) 2018-05-08 2019-04-25 Dispositif pour l'entraînement rotatif d'un outil et broche pour ce faire

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Country Link
DE (1) DE102018111039A1 (fr)
WO (1) WO2019214958A2 (fr)

Cited By (2)

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CN113369954A (zh) * 2021-08-09 2021-09-10 成都飞机工业（集团）有限责任公司 一种非接触式超声供电装置的连接装置及使用方法
CN115467655A (zh) * 2022-07-25 2022-12-13 成都深地领航能源科技有限公司 一种钻具旋转导向动态测量模拟装置

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IT202200000236A1 (it) * 2022-01-10 2023-07-10 M T S R L Modulo per torretta porta-utensili di un tornio

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JPH05208349A (ja) * 1992-01-29 1993-08-20 Mitsubishi Heavy Ind Ltd 主軸ユニット
DE4330820A1 (de) * 1993-09-13 1995-03-16 Komet Stahlhalter Werkzeug Werkzeugkopf mit externer Stromversorgung
ATE517712T1 (de) * 2002-04-20 2011-08-15 Renishaw Plc Maschinenanpassung
WO2006002675A1 (fr) * 2004-07-02 2006-01-12 Sauer Gmbh Outil a tete oscillante
CN101369757A (zh) * 2008-10-07 2009-02-18 广东工业大学 感应式超声电主轴
DE102014223544A1 (de) * 2014-11-18 2016-05-19 Sauer Gmbh Spindelvorrichtung und Werkzeugmaschine mit Spindelvorrichtung
CN104959639B (zh) * 2015-07-21 2017-06-27 大连理工大学 一种超声振动钻孔末端执行器
TWI671159B (zh) * 2017-09-15 2019-09-11 國立中興大學 高頻振動主軸系統

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113369954A (zh) * 2021-08-09 2021-09-10 成都飞机工业（集团）有限责任公司 一种非接触式超声供电装置的连接装置及使用方法
CN115467655A (zh) * 2022-07-25 2022-12-13 成都深地领航能源科技有限公司 一种钻具旋转导向动态测量模拟装置

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WO2019214958A3 (fr) 2020-01-09
DE102018111039A1 (de) 2019-11-14

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